Wheel-cultivator



(No Modl.)

E. BINPELDT.- v i WHEEL GULTIVATOR? No. 509,024. Y Patented Nov. 21,1893.

UNITED ,STATES` PATENT OFFICE.

EMIL EINFELDT, OF DAVENPORT, IOWA.

WH EEL-ou I TlvATo R. Y

SPECIFICATION forming part of Letters Patent No. 509,024, dated November21, 1893.

Application iiledMarch 17, 1893. Serial No. 466.5714.- (No model.)

To a/ZZ whom it may con/cerrar Be it known that I, EMIL EINEELDT, ofDavenport, county of Scott, and State of Iowa, have invented a new and'useful Improvement in Wheel-Cultivators, of which the following is aspecification.

This invention relates to that class of Wheeled cultivators in which thepipe box or coupling which connects the forward end of the shovelcarrying beam to the axle or frame is provided with an upright armjointed to an uprising-rod which slides through a guide at its top andwhich is encircled by a spiral spring exerting a downward pressure sothat -when the beam is lifted at the rear end the spring connection willtend to raise it and to relieve the operator of a portion of theweight.r

The drawing represents in perspective the forward end of the beam ordrag'bar or por-A tion of the frame to which'it is jointed and thespring connections in accordance with my invention.

A represents the forward end of the beam or drag bar connected by avertical pivot B to arms on the rear sideof a pipe box or.

sleeve C which loosely encircles the axle D, projecting in one side ofthe arch or main frame. The box C isprovided with an upright arm E castthereon or fixed rigidly thereto. neoted by a horizontal pivot pin F, tothe lower end of a rod G, which slides at its upper end through a guideH on the frame. This rod is encircled by astrong spiral spring I,bearing at the upper end against the guide H and at the lower endagainst the collar on the rod. The rod, instead of being made straightas usual is curved forward at its lower end to receive the pivot, theeffect of this being to incline the body of the rod backward and throwthe spring behind the arm E.

When thermachine is in operation and the rear end of the beam lowered,the spring sustains all or part of the Weight of the gangs,

The upper end of this arm is con and has practically no depressing edectthereon. As the beam is lifted at the rear end to vraise the shovelsfrom the soil, the pivot F 1s thrown forward so that the rod actuated bythe spring, tends to force the arm farther forward and therebj1 raise orassist in raising 'the rear end of the beam.

In practice the forward curvature of the rodl is found to be attendedwith many advantages,-tl1e principal one of which is that itl permitsthe other parts to be so proportioned and arranged in relationto eachother that .and down while in operation, without the Springs exertingany depressing effect, the

beams being practically suspended at the differentpositions which theyassume while in use, while on 'the other hand, with the straight springrod, there is less range, and practically but one point at which thebeams are suspended. Asthe beams go lower, there is an objectionabledepressing laction of the springs. `Having thus described my invention,I claiml. In a cultivator the combination with the axle of the beam andthe' arm E, connected therewith, the rod G curved forward at its lowerend and jointed to the arm, the guide for said rod and the springsurrounding the rod, the joint between the arm and rod being 'in frontof the line of action of the spring.

ing the rod between the jointed end and the guide, the said rod havingthe portion which carries the spring thrown rearward out of ,line withthe arm. Y

In testimony. whereofvI-hereunto vset my hand, this 4th day of February,1893,in the presence of two attesting witnesses.

` EMIL EINFELDT.

Witnesses:

MAY L. DODGE,

NATH FRENCH.

the axle frame, the spiral spring surround-

